Air cart metering system

ABSTRACT

An agricultural cart including a product metering system comprising an auger assembly extending generally along an axis non-parallel to a horizontal plane and non-perpendicular to the horizontal plane, and a holding chamber disposed at an upstream end of the auger assembly and configured to reduce pulsations within a flow of agricultural product from the auger assembly. The agricultural cart also includes an air source coupled to the product metering system and configured to transfer the agricultural product to an agricultural implement via an airflow.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional of U.S. patent application Ser. No.12/987,673, entitled “AIR CART METERING SYSTEM”, filed Jan. 10, 2011,which is hereby incorporated by reference in its entirety.

BACKGROUND

The invention relates generally to ground working equipment, such asagricultural equipment, and more specifically, to a system configured tocoordinate product delivery to an agricultural implement.

Generally, seeding implements are towed behind a tractor or other workvehicle via a mounting bracket secured to a rigid frame of a planter orseeder. These seeding implements typically include one or more groundengaging tools or openers that form a seeding path for seed depositioninto the soil. The openers are used to break the soil to enable seeddeposition. After the seeds are deposited, each opener is followed by apacker wheel that packs the soil on top of the deposited seeds.

In certain configurations, an air cart is used to meter and transportproduct (e.g., seeds, fertilizer, etc.) to ground engaging tools withinthe seeding implement. Certain air carts include a metering systemconfigured to deliver metered quantities of product into an airflow thattransfers the product to the openers. As will be appreciated, it may bedesirable to terminate a flow of product to certain openers when thoseopeners are located over areas where product has already been deposited,or in areas where it is undesirable to deposit the product.Unfortunately, certain metering systems provide a substantially equalflow of product to each ground engaging tool. Consequently, the groundengaging tools may deposit seed in swaths of soil that have already beenplanted, thereby resulting in wasted product.

BRIEF DESCRIPTION

In accordance with one embodiment, an agricultural cart includes aproduct metering system comprising an auger assembly extending generallyalong an axis non-parallel to a horizontal plane and non-perpendicularto the horizontal plane, and a holding chamber disposed at an upstreamend of the auger assembly and configured to reduce pulsations within aflow of agricultural product from the auger assembly. The agriculturalcart also includes an air source coupled to the product metering systemand configured to transfer the agricultural product to an agriculturalimplement via an airflow.

In accordance with another embodiment, an agricultural cart includes astorage tank configured to store agricultural product, a productmetering system coupled to the storage tank and configured to distributethe agricultural product in metered quantities, wherein the productmetering system comprises a plurality of auger assemblies configured totransfer the agricultural product to a respective plurality of primarylines, and each primary line is configured to transfer the agriculturalproduct to a plurality of secondary lines extending to respective rowunits within an agricultural implement The agricultural cart alsoincludes an air source coupled to the product metering system andconfigured to transfer the agricultural product to the row units via anairflow.

In accordance with a further embodiment, an agricultural cart includes astorage tank configured to store agricultural product, a productmetering system coupled to the storage tank and configured to distributethe agricultural product in metered quantities, wherein the productmetering system comprises a plurality of auger assemblies, and eachauger assembly is configured to operate at a different turn rate. Theagricultural cart also includes an air source coupled to the productmetering system and configured to transfer the agricultural product toan agricultural implement via an airflow.

DRAWINGS

These and other features, aspects, and advantages of the presentinvention will become better understood when the following detaileddescription is read with reference to the accompanying drawings in whichlike characters represent like parts throughout the drawings, wherein:

FIG. 1 is a side view of an implement coupled to an air cart, includinga metering system configured to regulate product delivery to groundengaging tools;

FIG. 2 is a schematic diagram of an air cart coupled to an implement, asshown in FIG. 1, illustrating a metering system including multipleproduct flow paths;

FIG. 3 is a schematic diagram of an exemplary metering system which maybe employed with the air cart of FIG. 1; and

FIG. 4 is a perspective view of an exemplary metering system, usingmultiple augers, which may be employed with the air cart of FIG. 1.

DETAILED DESCRIPTION

FIG. 1 is a side view of an implement coupled to an air cart including aproduct metering system configured to regulate product delivery toground engaging tools. In the illustrated embodiment, the implement 10includes a tool frame 16 in a working position. Consequently, with theframe 16 in the working position, the row units 18 engage the soil,thereby facilitating seed deposition into the soil. As illustrated, theimplement 10 includes a wheel assembly 30 having a wheel 32 whichcontacts the soil surface 34. Contact between the wheel 32 and the soilsurface 34 may drive the tool frame 16 toward an orientationsubstantially parallel to the soil surface 34. Consequently, each rowunit 18 may be properly positioned for seed and/or fertilizer depositioninto the soil. In the present embodiment, the row units 18 are coupledto respective mounting brackets 36 on the tool frame 16. While a singlerow unit 18 is shown for clarity, it should be appreciated that a rowunit may be coupled to each mounting bracket 36 on the frame 16. Forexample, in certain embodiments at least 2, 4, 6, 8, 9, 10, 12, 14, 16,18, 20, or more row units 18 may be coupled to each tool frame 16.

As illustrated, the row unit 18 includes a first member 38, a secondmember 40, and a tool actuator such as an actuating cylinder 42 (e.g.,hydraulic and/or pneumatic piston-cylinder assembly) coupled to themounting bracket 36. The cylinder 42 may be fluidly coupled to a fluidpower supply that provides a flow of pressurized fluid which displaces apiston rod extending from the cylinder. It should be appreciated thatthe fluid power supply may be hydraulic or pneumatic, thereby poweringthe hydraulic or pneumatic cylinder 42. The mounting bracket 36 isconfigured to interface with the tool frame 16, thereby securing the rowunit 18 to the implement 10. For instance, multiple row units 18 may bemounted in parallel along the tool frame 16. In the presentconfiguration, the first member 38, the second member 40, and themounting bracket 36 form elements of a parallel linkage, also known as afour bar linkage. As will be appreciated, components of the row unit 18,such as the mounting bracket 36, first member 38 and second member 40,may be made of any suitable material, such as steel.

The cylinder 42 is attached to a shank 44 via a pin at the end of thepiston rod. The shank, in turn, is coupled to the ground engaging tool46 via fasteners which enable height adjustment of the ground engagingtool 46 such that seeding depth may be varied. A pin is coupled to thefirst member 38 and the shank 44, enabling the shank 44 to pivotallyrotate about the pin as the cylinder 42 extends and retracts.Accordingly, the ground engaging tool 46 moves in a downward or upwarddirection based upon extension or retraction of the cylinder 42.Consequently, the tool actuator/cylinder 42 is configured to vary apenetration depth of the ground engaging tool 46 into the soil 34independently of a distance between the tool frame 16 and the soil 34.The shank 44 may feature several holes to receive a pin coupling the endof the cylinder 42 to the shank 44. The adapter holes may be used toadjust the angle of the cylinder 42 with respect to the parallel linkageassembly, thereby changing the angle and magnitude of cylinder forces.

In the present embodiment, partially relieving pressure to a cap end ofthe cylinder 42 will reduce the downward force applied by a packer wheelassembly 48. In addition, applying pressure to a rod end of the cylinder42 will raise the packer wheel assembly 48, and will eventually lift thepacking wheel 50 from the terrain. As will be appreciated, the packerwheel assembly 48 is configured to establish a desired penetration depthof the ground engaging tool 46 into the soil 34. In the presentembodiment, the packer wheel assembly 48 may facilitate heightadjustment of the packer wheel 50, in the form of a fastener and slot oran equivalent structure. To facilitate seed deposition during operation,the ground engaging tool 46 is coupled to a seed tube 52. As discussedin detail below, the seed tube is configured to receive a flow ofproduct from a product metering system.

As a result of this exemplary row unit configuration, the groundengaging tool 46 may be transitioned between a working position and anon-working position based on extension and retraction of the toolactuator/cylinder 42. As previously discussed, retraction of thecylinder 42 induces the ground engaging tool 46 to rotate in an upwarddirection, thereby extracting the ground engaging tool 46 from the soil,and transitioning the tool 46 toward the non-working position. Movingeach ground engaging tool 46 into the non-working position facilitatestransport of the seeding implement 10 by reducing the draft forceassociated with each tool 46. In addition, a flow of product (e.g.,seeds, fertilizer, etc.) to the row unit 18 may be temporarily suspendedwhen the ground engaging tools 46 are in the non-working position.Consequently, the seeding implement 10 may be moved across a field(e.g., turned at a headland) without depositing product within the soil.

Conversely, each ground engaging tool 46 may be transitioned toward theworking position by extending the tool actuator/cylinder 42, therebydriving the ground engaging tool 46 to rotate in a downward direction.As will be appreciated, while the ground engaging tool 46 is in theworking position, the tool 46 may excavate a trench into the soil as theimplement 10 traverses the field. Once a trench has been excavated, theproduct delivery system may deposit seeds and/or fertilizer into thesoil via the seed tube 52. The packer wheel 50 may then close thetrench, thereby forming a seed row suitable for crop development.

In certain embodiments, the ground engaging tools 42 may be fixedrelative to the tool frame 16. In alternative embodiments, theorientation of the tool frame 16 may be fixed relative to the tool bar14. In such embodiments, the tool actuators 42 may transition the groundengaging tools 42 between the working and non-working positions.

As illustrated, the air cart 54 is coupled to the implement 10 via theframe 16. In the present embodiment, product (e.g., seeds and/orfertilizer) is transferred from the air cart 54 to the row unit 18 via aflow of air passing through a pneumatic seed distribution hose 56. Forimplements 10 with multiple row units 18, separate hoses 56 and/or adistribution system may be employed to transfer product from the aircart 54 to each row unit 18. The illustrated air cart 54 includes astorage tank 60, a frame 62, wheels 64, the product metering system 66and an air source 68. In certain configurations, the storage tank 60includes multiple compartments for storing various flowable particulatematerials. For example, one compartment may include seeds, and anothercompartment may include a dry fertilizer. In such configurations, theair cart 54 is configured to deliver both the seeds and fertilizer tothe implement 10. The frame 62 includes a towing hitch configured tocouple to the implement 10 or tow vehicle. Seeds and/or fertilizerwithin the storage tank 60 are gravity fed into the product meteringsystem 66.

In the present embodiment, the product metering system 66 includes meteraugers to regulate the flow of material from the storage tank 60 into anair flow provided by the air source 68. The air flow then carries thematerial to the implement 10, thereby supplying the row units 18 withseeds and/or fertilizer for deposition within the soil. As discussed indetail below, the metering system 66 may include multiple augersconfigured to independently regulate product flow to various groups ofrow units 18, thereby providing a substantially uniform distribution ofproduct into the soil.

FIG. 2 is a schematic diagram of an air cart 54 coupled to an implement10, as shown in FIG. 1, illustrating a distribution system 88 includinga product metering system 66 and multiple product flow paths. In theillustrated embodiment, the distribution system 88 includes the productmetering system 66, primary distribution hoses 56, distribution headers90, and secondary distribution hoses 92. Product is delivered from theair cart 54 to row units 18 using the distribution system 88. Forexample, product may initially be located in air cart 54. Thedistribution system 88 transfers the product using the product meteringsystem 66 to primary distribution hoses 56. Next, the primarydistribution hoses 56 transfer the product to distribution headers 90positioned on an implement 10. Finally, the distribution headers 90transfer the product through secondary distribution hoses 92 to deliverthe product to row units 18 of implement 10.

The air cart 54 may contain one product or multiple products that aretransferred using the distribution system 88. For example, certaindistribution systems are configured to mix multiple products, andtransfer the products together to the row units 18. Such systems may beknown as “single shot” distribution systems. Alternatively, certaindistribution systems are configured to transfer product separately tothe row units 18. Such systems may be known as “double shot” systems.The air cart 54, as shown in FIG. 2, includes a single shot distributionsystem 88. However, other embodiments may include double shotdistribution systems.

The product metering system 66 controls the quantity of product that istransferred to the primary distribution hoses 56. The product meteringsystem 66 includes a variety of features which are described in greaterdetail below in relation to FIGS. 3 and 4. For example, the productmetering system 66 may contain one or more augers that transfer theproduct from the air cart 54 to the primary distribution hoses 56. Inconfigurations that employ multiple augers, the augers may be configuredto operate collectively or individually. For example, if the implementpasses over a swath of soil that is partially planted, the distributionsystem may activate certain augers to deliver product to the unplantedsections while deactivating other augers to block product delivery tothe planted sections. In this manner, the implement may provide asubstantially even distribution of product to the soil, therebysubstantially reducing wasted product associated with double-plantingcertain areas of the soil. A controller may be used to control theoperation of the augers. The controller may control whether augers arestarted or stopped, and/or determine a turn rate for each individualauger. In addition, the augers may be positioned at a certain angle toinhibit loss of product when the product metering system 66 is stopped.The augers may also contain a holding chamber to provide a steady flowof product to the primary distribution hoses 56.

The primary distribution hoses 56 are connected to the product meteringsystem 66 and configured to receive product from the product meteringsystem 66. Although two primary distribution hoses 56 are depicted, anynumber of hoses may be used. For example, some embodiments may only useone primary distribution hose 56, while other embodiments use 3, 4, 5,6, 7, 8, 9, 10 or more primary distribution hoses 56. The number andlength of primary distribution hoses 56 may be at least partiallydependent on the output of an air source, the type of product beingused, or the configuration of the implement 10 connected to the primarydistribution hoses 56.

The distribution headers 90 receive the product from the primarydistribution hoses 56. Generally, the number of distribution headers 90will match the number of primary distribution hoses 56. However, someembodiments may incorporate multiple primary distribution hoses 56 intoa single distribution header 90, or one primary distribution hose 56 maysplit to go to multiple distribution headers 90. In addition, there maybe any number of distribution headers 90. For example, some embodimentsmay use only one distribution header 90, while other embodiments use 3,4, 5, 6, 7, 8, 9, 10 or more distribution headers 90. The distributionheaders 90 cause the product to be distributed among secondarydistribution hoses 92. While three secondary distribution hoses 92 aredepicted, any number of secondary distribution hoses 92 may be used.

The secondary distribution hoses 92 provide a flow path for the productto be transferred from the distribution header 90 to the row units 18.Generally there will be a secondary distribution hose 92 for each rowunit 18. However, there may be multiple secondary distribution hoses 92going to a single row unit 18, or one secondary distribution hose 92could go to multiple row units 18. For example, a double shot system,where multiple products are transferred separately, may have multiplesecondary distribution hoses 92 going to a single row unit 18.

In certain embodiments, the distribution system 88 enables individual orcombined control of product distribution from the air cart 54 to theprimary distribution hoses 56. For example, the distribution system 88may individually stop, start, and/or regulate product delivery rates foreach primary distribution hose 56. In addition, the distribution system88 may block the flow of product when portions of the product meteringsystem 66 are stopped.

Turning now to FIG. 3, a schematic diagram of a product metering system66 is shown, which may be utilized with the air cart 54 of FIG. 1. Asillustrated, a distribution system 88 transfers a product 110 (e.g.,seeds, fertilizer, etc.) from an air cart 54 through the distributionhose 56. The air cart 54 contains the product 110 within a storage tank60. The distribution system 88 uses a product metering system 66including an auger assembly 112 to transfer the product 110 to an outletport 114 of the auger assembly 112. As the product 110 exits the outletport 114, an airflow from the air source 68 transfers the product 110through the distribution hose 56.

The product metering system 66 transfers the product 110 from thestorage tank 60 to the distribution hose 56 using the auger assembly112. The auger assembly 112 includes a lower end 116, a helicoid flange118, a holding chamber 120, the outlet port 114, a drive shaft 122, adrive sprocket 124, and an auger tube 126. The drive shaft 122 ispositioned within the auger tube 126, and the helicoid flange 118 isdisposed about the drive shaft 122. In this configuration, as the driveshaft 122 rotates, product 110 within the auger tube 126 flows towardthe outlet port 114. The auger tube 126 contains the product 110 untilthe product 110 reaches the outlet port 114. As illustrated, the outletport 114 connects directly to the distribution hose 56. Consequently, asthe product flows out of the outlet port 114, an air stream 130 from theair source 68 mixes with the product 110 to create an air/productmixture 132. The mixture 132 then flows to the row units of theimplement via the distribution hose 56. The air source 68 may be a pumpor blower powered by an electric or hydraulic motor, for example.

The helicoid flange 118 extends along the drive shaft 122 from the lowerend 116 of the auger assembly 112 to the holding chamber 120. The driveshaft 122 is turned by rotating the drive sprocket 124. Rotating thedrive shaft 122 induces the helicoid flange 118 to spin, therebytransferring the product 110 up the helicoid flange 118 to the holdingchamber 120. As will be appreciated, due to the shape of the helicoidflange 118, the flow of product will be substantially uneven.Consequently, the holding chamber 120 enables product 110 to accumulateuntil the product 110 reaches the outlet port 114. As a result, asubstantially constant flow of product will be transferred to thedistribution line 56, thereby reducing pulsations from the augerassembly 112.

To hold the auger assembly 112 in place while turning, a bracket 128mounts the auger assembly 112 to the storage tank 60. The auger assembly112 is mounted on the side of the storage tank 60 at an angle. Thisangle is depicted in FIG. 3 as matching the angle of the side of thestorage tank 60. However, other embodiments may include any anglebetween an angle parallel to a horizontal plane and an angleperpendicular to the horizontal plane. For example, the angle could bebetween 0 and 90 degrees, where 0 degrees would place the auger assembly112 laying on its side, parallel to the horizontal plane, and 90 degreeswould place the auger assembly 112 in a vertical orientation,perpendicular to the horizontal plane. In this configuration, whenrotation of the drive shaft is stopped, the product 110 will be held inthe holding chamber 120 by the force of gravity. Consequently, thepossibility of product flowing into the air stream 130 may besubstantially reduced or eliminated.

As illustrated, the auger assembly 112 is connected to the distributionhose 56 via the outlet port 114. In other embodiments, the productmetering system 66 may include multiple auger assemblies, where eachauger assembly is connected to a respective distribution hose. The drivesprocket 124 may be driven by a belt system, where a belt loops aroundthe drive sprocket 124 and a drive unit. Rotation of the drive unit willinduce the drive sprocket 124 to rotate, thereby rotating the driveshaft 122. In certain embodiments, the product metering system 66 mayinclude multiple auger assemblies. In such embodiments, each augerassembly may be connected to a synchronization device, such as the beltsystem, to turn all auger assemblies at the same time. The belt systemmay be used to start, stop and control the turn rate of an individualdrive sprocket 124, or a collective group of auger assemblies.

Alternatively, certain embodiments may employ a motor to drive the augerassembly 112, or multiple motors if the metering system 66 includes morethan one auger assembly 112. Like the belt system, the motors may beused to start, stop and control the turn rate of the drive sprockets124. In such embodiments, each auger assembly 112 may be controlledindividually via a respective motor. Consequently, product 110 may betransferred to some distribution hoses 56, while the product 110 isblocked from being transferred to others. This arrangement may decreasethe waste of product by limiting product flow to row units positionedover unplanted or unfertilized soil. Furthermore, some embodiments mayhave a controller to control the turn rates of each auger assembly.Controlling the turn rates effectively controls the amount of productthat flows to the distribution hose 56, and in turn the amount ofproduct that flows to the row units. For example, a metering system 66may include four auger assemblies. Three of the auger assemblies maydistribute product 110 to distribution headers that each have eightsecondary distribution hoses extending to respective row units. Thefourth auger assembly may distribute product 110 to a distributionheader with nine secondary distribution hoses, each delivering productto a respective row unit. Therefore, the fourth auger turn rate may beset to approximately 112% of the turn rate of the other three augerassemblies, thereby allowing each auger assembly to deliverapproximately the same quantity of product 110 to each of the row units.

FIG. 4 is a perspective view of a product metering system 66 includingmultiple auger assemblies 112, which may be employed within the air cart54 of FIG. 1. As illustrated, the product metering system 66 includesthree auger assemblies 112. Alternative embodiments may include more orfewer auger assemblies. For example, certain embodiments may include 1,2, 3, 4, 5, 6, or more auger assemblies 112. In the illustratedembodiment, each auger assembly 112 includes a motor 140, and a controlline 142 extending between the motor 140 and a controller 144.

Similar to the auger assembly 112 described above with reference to FIG.3, each auger assembly 112 includes an outlet port 114 and a drivesprocket 124. As previously discussed, each outlet port 114 may beconnected to a distribution hose to deliver the product 110 to row unitson an implement. Motors 140 are connected to the drive sprockets 124 ofeach auger assembly 112, and the control lines 142 communicativelycouple the motors 140 to the controller 144. While each motor 140 isconfigured to drive a single auger assembly 112 in the illustratedembodiment, it should be appreciated that alternative embodiments mayinclude motors 140 configured to drive 1, 2, 3, 4, 5, or more augerassemblies 112.

The controller 144 is configured to send signals through control lines142 to start and stop the motors 140, which in turn start and stop thedrive sprockets 124 on the auger assemblies 112. When the drivesprockets 124 are turning, the product 110 is delivered to thedistribution system via the outlet port 114. The controller 144 may alsosend specific signals to turn auger assemblies 112 at a particular turnrate. This turn rate may be varied to deliver a calculated amount ofproduct over a period of time, thereby ensuring that the appropriatequantity of product is delivered to the row units. The controller 144may control the auger assemblies 112 to function collectively, or it maycontrol the auger assemblies 112 to function separately, as desired fora particular application. In certain embodiments, the controller 144 isconfigured to control the auger assemblies 112 based on predeterminedflow rates. Alternatively, the controller 144 may enable user input tocontrol the auger assemblies 112. In further embodiments, the controller144 may receive inputs from a positioning system, such as a GlobalPositioning System, and automatically regulate product flow rates fromeach auger assembly 112 based on the measured position.

By individually controlling the product flow rate from each augerassembly 112, the controller 144 may enable the implement to deliver asubstantially even distribution of product throughout a field. Forexample, if a first primary distribution hose 56 extends to adistribution header 90 having four row units 18, while a second primarydistribution hose 56 extends to a distribution header 90 having threerow units 18, the controller 144 may provide an increased flow rate tothe first primary distribution hose 56. As a result, each row unitattached to the first and second distribution headers will receive asubstantially equal flow of product. Consequently, the controller 144may compensate for variations in product deliver system configurations.In addition, if the implement passes over a swath of soil that ispartially planted, the controller 114 may activate certain augerassemblies 112 to deliver product to the unplanted sections whiledeactivating other auger assemblies to block product delivery to theplanted sections. In this manner, the implement may provide asubstantially even distribution of product to the soil, therebysubstantially reducing wasted product associated with double-plantingcertain areas of the soil.

While only certain features of the invention have been illustrated anddescribed herein, many modifications and changes will occur to thoseskilled in the art. It is, therefore, to be understood that the appendedclaims are intended to cover all such modifications and changes as fallwithin the true spirit of the invention.

1. An agricultural cart, comprising: a storage tank configured to storeagricultural product; a product metering system coupled to the storagetank and configured to distribute the agricultural product in meteredquantities, wherein the product metering system comprises a plurality ofauger assemblies, and each auger assembly is configured to operate at adifferent turn rate; and an air source coupled to the product meteringsystem and configured to transfer the agricultural product to anagricultural implement via an airflow.
 2. The agricultural cart of claim1, wherein each auger assembly is configured to transfer theagricultural product to a respective primary line, and each primary lineis configured to transfer the agricultural product to a plurality ofsecondary lines extending to respective row units within theagricultural implement.
 3. The agricultural cart of claim 2, wherein theturn rate of each auger assembly is based at least in part on a numberof secondary lines coupled to the respective primary line.
 4. Theagricultural cart of claim 1, wherein each auger assembly comprises amotor configured to drive the auger assembly to rotate, and the productmetering system comprises a controller communicatively coupled to eachmotor and configured to independently control the turn rate of eachauger assembly.
 5. The agricultural cart of claim 4, wherein thecontroller is configured to start and stop each auger assemblyindependently.
 6. The agricultural cart of claim 4, wherein thecontroller is configured to receive an input from a positioning systemand to determine the turn rate of each auger assembly based at least inpart on the input.
 7. The agricultural cart of claim 1, wherein eachauger assembly extends generally along an axis non-parallel to ahorizontal plane and non-perpendicular to the horizontal plane.
 8. Anagricultural cart, comprising: a storage tank configured to storeagricultural product; a product metering system coupled to the storagetank, wherein the product metering system comprises a plurality of augerassemblies configured to distribute the agricultural product in meteredquantities and a controller configured to independently control arespective turn rate of each auger assembly; and an air source coupledto the product metering system and configured to transfer theagricultural product to an agricultural implement via an airflow.
 9. Theagricultural cart of claim 8, wherein each auger assembly is configuredto transfer the agricultural product to a respective primary line, andeach primary line is configured to transfer the agricultural product toa plurality of secondary lines extending to respective row units withinthe agricultural implement.
 10. The agricultural cart of claim 9,wherein the controller is configured to determine the respective turnrate of each auger assembly based at least in part on a number ofsecondary lines coupled to the respective primary line.
 11. Theagricultural cart of claim 8, wherein each auger assembly comprises amotor communicatively coupled to the controller and configured to drivethe auger assembly to rotate.
 12. The agricultural cart of claim 8,wherein the controller is configured to instruct each auger assembly tooperate at a different respective turn rate.
 13. The agricultural cartof claim 8, wherein the controller is configured to start and stop eachauger assembly independently.
 14. The agricultural cart of claim 8,wherein the controller is configured to receive an input from apositioning system and to determine the respective turn rate of eachauger assembly based at least in part on the input.
 15. The agriculturalcart of claim 8, wherein each auger assembly extends generally along anaxis non-parallel to a horizontal plane and non-perpendicular to thehorizontal plane.
 16. An agricultural cart, comprising: a storage tankconfigured to store agricultural product; a product metering systemcoupled to the storage tank and configured to distribute theagricultural product in metered quantities, wherein the product meteringsystem comprises a plurality of auger assemblies and a controllerconfigured to separately regulate a respective delivery rate of theagricultural product from each of the auger assemblies into acorresponding primary distribution line configured to transport theagricultural product to an agricultural implement; and an air sourcecoupled to the product metering system and configured to provide anairflow to facilitate transfer of the agricultural product within theprimary distribution line to the agricultural implement.
 17. Theagricultural cart of claim 16, wherein each primary distribution line isconfigured to transfer the agricultural product to a plurality ofsecondary lines extending to respective row units within theagricultural implement, and the controller is configured to regulate therespective delivery rate from each auger assembly based at least in parton a number of secondary lines coupled to the corresponding primarydistribution line.
 18. The agricultural cart of claim 16, wherein eachauger assembly comprises a motor communicatively coupled to thecontroller, and the controller is configured to instruct the motor tostart, stop, and control a turn rate of the auger assembly to separatelyregulate the respective delivery rates.
 19. The agricultural cart ofclaim 16, wherein the controller is configured to receive an input froma positioning system and to determine the respective delivery rate ofthe agricultural product from each auger assembly based at least in parton the input.
 20. The agricultural cart of claim 16, wherein each augerassembly extends generally along an axis non-parallel to a horizontalplane and non-perpendicular to the horizontal plane.